If you mean which Arch-type (like Warrior, Thief, ect) I go Enchanter, focusing on Endurance (with bonus points), Agility, and Perception. The natural Charisma gets you Kylira. Which gives you a heal spell (heals for a lot). Agility and Perception for Dodging/Hitting (note you can also dodge over world traps). Endurance for almost a perpetual attack. Strength and Magic... well... starting with 3, you can end with 6 (maxed Stronger and Witcher, can go higher with items), which is enough.
If you mean more specifically how I did it, can't recall exactly off the top of my head, but for a minotaur it's just picking the correct dialog. For the Demon Jester you need to win a challenge she gives you, which takes very high (like either 8+ or 9) Perception for 1, or Agility for the other, there are other challenges, but sense I have 9 for both at that point those are the 2 I take.
This works for me. I've seen/read about other people having success with other builds and characters. All this said I use my first character as an achievement getter, So when I actually make a more serious character I get a far better start. As a point of other people finding different ways https://itch.io/t/568816/triple-ironman-speedrun-thief yeah. Many different ways to play.